168 BRYACEtE. [OrtJiOtrichiim. 



necked ; lid rostellate ; teeth 16, geminate, long-lanceolate, 

 transversely densely i^unctulate, lineolate, reflexed when dry; 

 cilia 8, robust, as long as the teeth, of a double row of punctate 

 cells. — Icon. Muse. Suppl. 64, t. 46. 



Hab. On rocks, California (Bolander). 



Allied to the last, differing essentially in the teeth of the peristome, the 

 longer capsule, the bistromatie cells of the leaves, etc. 



9. O. Watsoni, James. Plants loosely cespitose, green, 

 yellowish below ; stem simple or rarely divided : leaves soft, 

 oj^en, reflexed when moist, lanceolate from the more enlarged 

 erect base ; borders revolute all around ; upper areolation with 

 long bifurcate papillae : calyptra moderately hairy : capsule 

 short-pedicellate, emergent, oval, without a neck, distinctly cos- 

 tate when dry, and constricted under the broad orifice; lid 

 short-beaked ; teeth smooth, distantly articulate, closely con- 

 nate in pairs, yellowish white ; cilia stout, of a double row of 

 cells, punctate. — Bot. King Exp. 401 ; Sulliv. 1. c. 73, t. 54. 



Hab. Damp shaded rocks. West Humboldt Mountains, Nevada, at 

 5,500 feet altitude ( Watson). 



Allied to O. Texanum, differing in its color, in the broader, softer, 

 more reflexed leaves, the long forked papilla}, the peristome, etc. 



10. O. affine, Schrad. Tufts loose, dark green: leaves 

 open or slightly recurved, lanceolate-acuminate, very paj^illose ; 

 borders reflexed all around : calyptra conical-mitrate, greenish, 

 with few spare short hairs, covering nearly the whole sporan- 

 gium : capsule of a thin tissue, emergent, narrowly oval, de- 

 fluent into a collum nearly as long as the sporangium and 

 covering the pedicel at its base, sulcate and elongated when 

 dry, pale yellow, its striae slightly darker-colored ; lid convex, 

 rostellate, pale yellow ; teeth bigeminate, sometimes split along 

 the divisural line, pale yellow ; cilia 8, filiform, as long as the 

 teeth. — Spic. Fl. Germ. 67 ; Bryol. Eur. t. 216. 



Hab. Trunks of trees, Lake Superior (Agassiz), 

 The species is easily confoiuided with the following, though very dis- 

 tinct in its nearly naked calyptra, its smaller size, shorter pedicel, etc. 



11. O. alpestre, Hornsch. Tufts compact, bro^mish 

 green : leaves lanceolate, deeply carinate, revolute and minutely 

 crenulate on the borders ; upper areolation minutely punctate, 

 papillose, loose, linear or equilateral, partly chlorophyllose at 

 base : calyptra nearly smooth, covering three-fourths of the 

 capsule, pale yellow, turning blackish at the apex : capsule 



